Properties of Sulfuric Acid (H2SO4)
Sulfuric acid is a highly corrosive and strong mineral acid with the chemical formula H2SO4. It is colorless, odorless, and extremely dense. Sulfuric acid is one of the most important industrial chemicals and is used in various applications, including as a catalyst in chemical reactions.
The following table provides a comprehensive list of sulfuric acid properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Molar Mass | 98.08 g/mol |
| Density | 1830 kg/m3 |
| Dynamic Viscosity | 23.55 mPa·s |
| Surface Tension (50°C) | 51.7 mN/m |
| Thermal Properties | Metric |
| Melting Point | 10 °C |
| Boiling Point | 290 °C |
| Thermal Conductivity | 0.36 W/m·K |
| Critical Constants | Metric |
| Critical Temperature (Tc) | 655 °C |
| Critical Pressure (Pc) | 4.6 MPa |
| Optical Properties | Metric |
| Refractive Index (589 nm) | 1.418 |
| Hazardous Data | Metric |
| NFPA Rating (Health) | 3 |
| NFPA Rating (Fire) | 0 |
| NFPA Rating (Reactivity) | 2 |
Unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)
Related Pages
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) Yaws, Carl L. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals. Netherlands: Elsevier Science, 2015. 4) Fire Protection Guide to Hazardous Materials, 14th Edition. United States: National Fire Protection Association, 2010.